[-] Fix bug #PSCSX-3177, handle png
// follow up https://github.com/PrestaShop/watermark/commit/4e608a8276b251d4d2dc5b8f5920ac7510dcd08e#commitcomment-8561815
[+] MO : Watermark : Show nonwatermarked image for logged in customers
Merge pull request #2 from PhpMadman/WatermarkCustLogged

[+] MO : Watermark : Show nonwatermarked image for logged in customers
[+] MO : Watermark : Added image_type parameter to hook
Merge pull request #4 from PhpMadman/HookParam

[+] MO : Watermark : Added image_type parameter to hook
// Version updated to v1.0.2